Answers
Answer:
a brown bear hibernates and become inactive during winter
Related Questions
Because the triple beam balance is zeroed before it is put into use, it measures
A.
volume
B.
weight
C.
the effects of gravity
D.
mass
Answers
Hope this helps
6.
Ammonia (NH3) acts as a weak base in aqueous solution. What is the acid that reacts with this base
when ammonia is dissolved in water?
(A) NHA
(B) H2O
(C) Oxygen, which is always dissolved in water
(D) None of the above, there are no acids in pure water
Answers
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on eight comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you.!Explanation:
Ammonia acts as a weak base in aqueous solution. Water is the acid that reacts with this base when ammonia is dissolved in water.
What is a base?According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.
Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.
They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.
Learn more about base,here:
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20 points!! Please help ASAP!
Determine the molarity (M) of a solution that is made by dissolving 0.35 moles NaCl in water in order
to make 500 mL of solution. *For Molarity problems, convert mL to L
Answers
Answer:
78 ml
Explanation:
calcium phosphate consists of two ions chemically bonded together. What are charges of each ion?
Answers
Answer: Ca^2+ and P^3-
Explanation:
Waste water from nuclear power plants is generally ?
Answers
☁️ Answer ☁️
Waste water from nuclear power plants is generally: radioactive.
Hope it helps.
Have a nice day noona/hyung
If the solubility of sugar is 204/100 mL, how much water will be required to saturate a solution that contains 1608g of sugar?
Answers
4. Explain how radioactive isotopes are used to detect health problems.
Answers
Chem. Assignment
I need help...with answers 1-6 thanks
Answers
Answer:
1. an educated guess
2. data
3. what changes in experiment
4. what stays the same in both groups
5. the group where nothing changes, normal
6. group with independent variable, what's being tested
Perform the following operation
and express the answer in
scientific notation.
3.60x10-12 + 3.60x10-11
Answers
Answer:
3.60X10^-12 is equal to 0.360X10^-11 (move decimal one place left)
Now you can add 3.60X10^-11 and 0.360X10^-11:
3.60X10^-11 + 0.360X10^-11 = 3.96X10^-11
You're really just adding 3.60 to 0.36 since the "X10^-11" is the same for both.
24+25
= 49
Benzoic acid, HC6H5CO2,is a monoprotic acid(only one H+ ionizes)with a Ka=6.5×10^-5. Calculate [H+] and the pH of a .32M solution of benzoic acid. PLEASE ANSWER.
Answers
Answer:
[H⁺] = 4.56x10⁻³ M
pH = 2.34
Explanation:
Hello there!
In this case, according to the ionization reaction of benzoic acid:
[tex]HC_6H_5CO_2+H_2O\rightleftharpoons C_6H_5CO_2^++H_3O^+[/tex]
Whereas [tex][H_3O^+]=[H^+][/tex], we can set up the equilibrium expression in terms of [tex]x[/tex] (reaction extent) to obtain:
[tex]Ka=\frac{[C_6H_5CO_2^-][H_3O^+]}{[HC_6H_5CO_2]} \\\\6.5x10^{-5}=\frac{x^2}{0.32-x}[/tex]
However, since Ka<<<1, we can neglect the [tex]x[/tex] on bottom to easily solve for it:
[tex]6.5x10^{-5}=\frac{x^2}{0.32}\\\\x=\sqrt{6.5x10^{-5}*0.32} \\\\x=4.56x10^{-3}[/tex]
Which is actually the same as [H⁺]. Finally, the pH turns out to be:
[tex]pH=-log(4.56x10^{-3})\\\\pH=2.34[/tex]
Best regards!
PLEASE PLEASE HELP THIS IS SCIENCE !!
ILL MARK U BRAINLIEST IF UR CORRECT
Answers
Answer:
Q 14 Deceleration
Explanation:
You are slowing down
Answer:
Explanation:
question 14 is a
question 15 is c
questoin 13 is d
Complete and balance the equation. Show your work on paper and submit a screenshot to
Canvas.
N_20_5
A. Not possible
B. 2, 2,5
C. 2,5,2
D. 2,2,4
Answers
Answer:
A
Explanation:
because need more number to complete the balance equation
Please help me figure this question out I’ll mark you brainiest. The balanced equation would be 2Na + 2Cl = 2NaCl. Hope that helps ya solve it.
Answers
Answer:
I think c.............
all about Henry Mosléy?
Answers
Answer:
Henry Moseley was an English physicist whose contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.
Calcium carbonate decomposes into
calcium oxide and carbon dioxide.
The mass of calcium carbonate that
decomposes is 57 g. At the end of
the experiment, the mass of the
products were only 45 g. What can
we conclude from this information?
Answers
Answer:
The mass of carbon dioxide formed is 12g.
What type of chemical reaction is demonstrated by this equation? A+BX-AX+B
Answers
Answer:
d an acid - base reaction.
Explanation:
Answer:
single replacement
Explanation:Look it up and got it from quizlet it should be right.
what is the lewis dot structure for ClF (chlorine monofluoride)?
Answers
Answer:
Explanation:
.
describe how energy changes from a usable form to a less usable form in a buildings heating system
Answers
Answer:
The warm exhaust from the natural gas heater
is the result of taking usable energy (in the
natural gas), using some of it, then releasing
the less usable form (exhaust). or you can write -> Electricity is a usable form of energy, but heat is not. Heat is simply dissipated to the surroundings as a result of temperature gradient. Thus, energy is transformed from usable to non-usable form.
Why should we work to protect estuaries? Select all that apply.
PLSSSS
Answers
Answer:
1, 3, and 4
Explanation:
I'm guessing, but those make the most sense
Answer:
3 and 4
Explanation:
How are a rainforest and a desert different?
Answers
Answer:
Difference between Desert Plants and Rainforest Plants. The deserts are very dry land areas that can be hot or cold and experience very less rainfall. On the other hand, rainforests receive an enormous amount of rain. Both are homes to a variety of plants.
Explanation:
1. This balanced equation represents a chemical reaction.
2C4H10+ 1302
8CO2 + 10H2O
What type of chemical reaction is represented by the equation?
A. Double replacement
B. Combustion
C. Single replacement
D. Synthesis (combination)
Answers
Answer:
combustion is the answer
Question 1
Calculate the pressure in a 12 Liter tank containing 2.52 moles of argon gas at 5°C?
a 8.2 atm
b 2.4 atm
с 0.3 atm
d 5 atm
PLEASE HELP
Answers
Answer:
D
Explanation:
Hannah made a diagram to show how plants make their own food. What should Hannah write to fill in the blank in the diagram?
A)
heat from the soil
B)
energy from the Sun
C)
heat from the roots
D)
energy from the wind
PLS SOME HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP I NEED HELPPPPPPPPPPP
Answers
Answer:
Answer: Energy from the sun.
Explanation:
If you look at the hints it says that it needs something else for a plant to grow and what does a plant need?
Air, Water, and energy from the Sun to make food
Hope this helps :)
Answer:
Energy from the sun
Explanation:
help?? help for mee??? maybe? what if i said...please????
Answers
Answer:
c
Explanation:
because they transfer an electron the sodium ion has a positive charge, and the chlorine ion has a negative charge so one gives off positive and one gives of negative
Which answer choice describes all nonmetals? A. All of the elements of Period 2 in green boxes B. Hydrogen and all of the other elements in orange boxes C. All of the elements of Group 18 in orange boxes D. Hydrogen and all of the elements in blue boxes
Answers
An answer is the group of reactive nonmetals and Noble gases.
I am not sure what the colored boxes mean, referring to my periodic table. However, the nonmetals are Hydrogen, Carbon, Nitrogen, etc., including the Noble gases.
Green and purple below, then hydrogen of course.
The following diagram shows a single cell. Is the cell eukaryotic or prokaryotic? Explain your reasoning
Answers
Answer:
eukaryotic because it has a nucleus
Explanation:
Aliyah found a tarnished silver dollar and recalled that tarnish results when metals react with oxygen or sulfur compounds in the air. She polished the silver dollar to remove the tarnish until it was shiny again. She also polished a copper bracelet and a gold ring. What physical property of these metals makes them shiny?
A. conductivity
B. ductility
C. luster
D. malleability
Answers
Answer:
C.
Explanation:
Luster
what is the mass number for an atom that has 36 protons 36 electrons and 40 neutrons
Answers
Answer:
76
Explanation:
Mass number = number of protons plus the number of neutrons
So, 36 + 40 = 76
Which of these do NOT show malleability a) Iron
b) Sulfur
c) Copper
d) Aluminum
Answers
Answer:Sulfur
Hope this helps!
Explanation:
I just need 4-8! Plz hurry!!!!!!!!!!!
Answers
Answer:
4: 90N
5: 7.77777m/s
6: 4
7: 12.5609756098
8: 187.5
Explanation: